EXT4-fs error (device loop3): ext4_map_blocks:579: inode #18: block 112: comm syz-executor.3: lblock 0 mapped to illegal pblock 112 (length 1)
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kernel BUG at fs/ext4/ext4.h:3241!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5367 Comm: syz-executor.3 Not tainted 6.3.0-syzkaller-10197-g91ec4b0d11fe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3241
Code: 4e ff 8b 74 24 04 48 c7 c7 60 cd 0b 8d 4c 89 f2 e8 ac 82 2d 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 c7 5d 4e ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00
RSP: 0018:ffffc9000616f878 EFLAGS: 00010283
RAX: ffffffff823cb959 RBX: 00000000ffffee9b RCX: 0000000000040000
RDX: ffffc900102f3000 RSI: 00000000000130b8 RDI: 00000000000130b9
RBP: 0000000000000001 R08: ffffffff823cb629 R09: fffffbfff1ca8b56
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100463c8cf
R13: dffffc0000000000 R14: ffff8880231e2000 R15: ffff8880231e4678
FS:  00007f51524dd700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd34b1fe800 CR3: 000000007ca7d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_mb_load_buddy_gfp+0xc6/0x850 fs/ext4/mballoc.c:1446
 ext4_discard_preallocations+0x744/0x1090 fs/ext4/mballoc.c:5226
 ext4_release_file+0x16e/0x300 fs/ext4/file.c:166
 __fput+0x3b7/0x890 fs/file_table.c:321
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 get_signal+0x1606/0x17e0 kernel/signal.c:2650
 arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f515bc8c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f51524dd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffff8b RBX: 00007f515bdac120 RCX: 00007f515bc8c169
RDX: 0000000000000011 RSI: 0000000020000040 RDI: 0000000000000006
RBP: 00007f515bce7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffde74354af R14: 00007f51524dd300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3241
Code: 4e ff 8b 74 24 04 48 c7 c7 60 cd 0b 8d 4c 89 f2 e8 ac 82 2d 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 c7 5d 4e ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00
RSP: 0018:ffffc9000616f878 EFLAGS: 00010283
RAX: ffffffff823cb959 RBX: 00000000ffffee9b RCX: 0000000000040000
RDX: ffffc900102f3000 RSI: 00000000000130b8 RDI: 00000000000130b9
RBP: 0000000000000001 R08: ffffffff823cb629 R09: fffffbfff1ca8b56
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100463c8cf
R13: dffffc0000000000 R14: ffff8880231e2000 R15: ffff8880231e4678
FS:  00007f51524dd700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f52ac4240f0 CR3: 000000007ca7d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400